met-medieval-art: Glass Fragment, 15th century, Metropolitan Museum of Art: Medieval ArtGift of Dr.
met-medieval-art: Glass Fragment, 15th century, Metropolitan Museum of Art: Medieval ArtGift of Dr. Bashford Dean, 1923Size: Overall: 3 3/8 x 1 ¾ in. (8.5 x 4.5 cm)Medium: Pot metal glasshttps://www.metmuseum.org/art/collection/search/466458 -- source link